MPAs and the species they protect are increasingly being impacted by climate change. Although MPAs are widely promoted as a means to mitigate the effects of climate change, the opposite perspective is more in line with the scientific reality: without drastic reductions in carbon emissions, ocean warming, acidification and oxygen depletion will disrupt the composition and functioning of the ecosystems currently protected within the world’s MPAs. The community- and ecosystem-level impacts of climate change threaten to negate decades of progress in conservation and further imperil species and ecosystems that are already in jeopardy. Webinar co-sponsored by the NOAA National MPA Center, MPA News, and the EBM Tools Network (co-coordinated by OCTO and NatureServe).